Kate Somerville Peptide K8 Power Cream Review

Kate Somerville Peptide K8 Power Cream
6.4
/ 10
Moisturizing
5.4 Humectancy icon Humectancy
7.3 Occlusivity icon Occlusivity
Review

Does Kate Somerville Peptide K8 Power Cream Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what Kate Somerville Peptide K8 Power Cream has to offer:
 
✅ Significant moisturizing. It has a moisturizing rating of 6.4 out of 10.

  

Key Benefits of Kate Somerville Peptide K8 Power Cream

 
These are the key benefits you can expect from using Kate Somerville Peptide K8 Power Cream:
 

🔵🔵 Moisturizer with the Right Occlusivity for Normal to Dry Skin

According to CreamScan analysis, Kate Somerville Peptide K8 Power Cream is highly moisturizing, with a moisturizing rating of 6.4 out of 10.

Is it more humectant or occlusive? Rather occlusive. It has a moderate humectancy of 5.4 out of 10, primarily due to the substantial concentration of Glycerin (est. ≈3.0%), and a high occlusivity of 7.3 out of 10, mainly due to the significant content of Stearic Acid (est. ≈9.0%) and Isocetyl Stearoyl Stearate (est. ≈2.0%).

This type of product, when used as a standalone moisturizer, may provide a significant level of occlusive hydration that is adequate for normal to dry skin.

The occlusive profile of Kate Somerville Peptide K8 Power Cream suggests a texture that is rich and creamy but not overly thick, offering the potential to absorb into the skin without leaving a greasy afterfeel in most cases.

Please refer to the Ratings section below for details of the moisturizing rating calculation.

📌 Please note that this is not a complete list of benefits. We are in the process of enhancing our AI model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.

Things to Be Aware Of: Kate Somerville Peptide K8 Power Cream

 
CreamScan AI identified a few things to consider before adding Kate Somerville Peptide K8 Power Cream to your skincare routine:
 

⚠️ Needs to Be Paired with Extra Humectants for Optimal Moisturizing Efficacy

An ideal moisturizer for any skin type should balance the right level of occlusivity (depending on skin type) with a significant amount of humectants, while Kate Somerville Peptide K8 Power Cream contains a moderate level of humectants.

People with normal to dry skin would definitely benefit from adding more humectants to their moisturizing routine beyond what this product offers. If this is your only moisturizer, it may be worth including a humectant-rich product, such as a serum, in your skincare routine.

⚠️ Questionable anti-wrinkle efficacy

If one of your main reasons for choosing Kate Somerville Peptide K8 Power Cream is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

It contains some ingredients often marketed as effective in reducing wrinkles, specifically Ascorbyl Palmitate, Copper PCA, and Palmitoyl Oligopeptide. However, the studies supporting the anti-wrinkle claims of these ingredients provide insufficient evidence of efficacy according to CreamScan Research Evaluation Standards. 

While this does not categorically rule out the possibility that these ingredients may reduce wrinkles, their efficacy is not supported by convincing, vehicle-controlled, double-blind clinical studies - at least none that were available to the CreamScan team at the time of publication.

Therefore, these ingredients do not generate the anti-wrinkle rating.

📌 Moisturizers, when used regularly, are proven to prevent wrinkle formation and even reduce existing wrinkles. Therefore, this product, like any other moisturizer, can deliver some anti-wrinkle effects through its moisturizing action.

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Pros & Cons of Kate Somerville Peptide K8 Power Cream

 
Here’s an overview of the pros and cons of Kate Somerville Peptide K8 Power Cream to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

Provides the right level of occlusivity to moisturize normal to dry skin
Rich and creamy texture without being overly thick
 

⭕ Cons: 

⚠️ Only if used as a standalone moisturizer - needs to be paired with extra humectants for optimal moisturizing efficacy
⚠️ Questionable anti-wrinkle efficacy
   

Summary: Kate Somerville Peptide K8 Power Cream

 
Based on the ingredient list analysis, CreamScan AI suggests that Kate Somerville Peptide K8 Power Cream
, as a moisturizer, provides an adequate level of occlusivity for normal to dry skin, delivered in a rich yet not overly thick formula.
 
That said, there are some things about Kate Somerville Peptide K8 Power Cream worth noting.
 
If you use this product as your only moisturizer in a routine, please note that it contains a limited amount of humectants. Regardless of your skin type, adding extra humectants can enhance optimal moisturizing efficacy. Therefore, it may be worth pairing Kate Somerville Peptide K8 Power Cream with a humectant-rich product, such as a serum, in your skincare routine.
 
If one of your main reasons for considering Kate Somerville Peptide K8 Power Cream is its potential anti-aging effects, please note that, according to CreamScan analysis, its anti-wrinkle efficacy is questionable. None of the ingredients in this product provide substantial evidence of their anti-wrinkle efficacy according to CreamScan Research Evaluation Standards.
 
❗️ Fact check. At CreamScan, we are committed to accuracy and fairness. If you spot any errors or something that doesn’t seem right, please click here to let us know. We regularly update the ingredient lists and monitor the latest research on ingredient efficacy to ensure that our information remains as complete and precise as possible.

 

Ingredients

Est. % Ingredient Origin Functions
60
9
6
4
3
2.5
2
1.5
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.1
0.3
Est. %
Water
Function:
Origin:
Stearic Acid
Function:
Origin:
Cetearyl Alcohol
Function:
Origin:
Ceteareth-20
Function:
Origin:
Glycerin
Function:
Origin:
Isopropyl Myristate
Function:
Origin:
Isocetyl Stearoyl Stearate
Function:
Origin:
Dimethicone
Function:
Origin:
Cyclopentasiloxane
Function:
Origin:
C12-15 Alkyl Benzoate
Function:
Origin:
Caprylic/Capric Triglyceride
Function:
Origin:
Orbignya Oleifera Seed Oil
Function:
Origin:
Cannabis Sativa Seed Oil
Function:
Origin:
Squalane
Function:
Origin:
Cholesterol
Function:
Origin:
Urea
Function:
Origin:
Sodium PCA
Function:
Origin:
Macadamia Ternifolia Seed Oil
Function:
Origin:
Simmondsia Chinensis (Jojoba) Seed Oil
Function:
Origin:
Silk Powder
Function:
Origin:
Tribehenin
Function:
Origin:
Triethanolamine
Function:
Origin:
Xanthan Gum
Function:
Origin:
Butylene Glycol
Function:
Origin:
Tocopheryl Acetate
Function:
Origin:
Allantoin
Function:
Origin:
Trehalose
Function:
Origin:
Citrus Grandis Peel Oil
Function:
Origin:
Ascorbyl Palmitate
Function:
Origin:
Ceramide NS
Function:
Origin:
PEG-10 Rapeseed Sterol
Function:
Origin:
Triacetin
Function:
Origin:
Copper PCA
Function:
Origin:
Polyquaternium-51
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Palmitoyl Oligopeptide
Function:
Origin:
Disodium EDTA
Function:
Origin:
Citric Acid
Function:
Origin:
Sodium Benzoate
Function:
Origin:
Potassium Sorbate
Function:
Origin:
Chlorphenesin
Function:
Origin:
Fragrance
Function:
Origin:
Hexyl Cinnamal
Function:
Origin:
Butylphenyl Methylpropional
Function:
Origin:
Limonene
Function:
Origin:

Ratings

All humectants
5.4
3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
All occlusives
14.6
9.0
2.0
1.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
20
Moisturizing rating
6.4
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 5.4 10
5.4
3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Occlusivity All occlusives 14.6 20
7.3
9.0
2.0
1.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Moisturizing rating
6.4
Ingredient Est. % Benchmark Humectancy
3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
All humectants 5.4 10
5.4
All humectants
5.4
3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
9
2
1.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
All occlusives 14.6 20
7.3
All occlusives
14.6
9.0
2.0
1.5
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
n/a
- 0.3 -
n/a
- 0.3 -
n/a
- 0.3 -
Total
0
Ascorbyl Palmitate
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Copper PCA
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Palmitoyl Oligopeptide
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
0.3
0.3
0.3
0.3
All antioxidants 1.2 3 No
All antioxidants
1.2
Tocopheryl Acetate
0.3
Citrus Grandis Peel Oil
0.3
Ascorbyl Palmitate
0.3
Sodium Hyaluronate
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
0.3
All soothing 0.3 5 No
All soothing
0.3
0.3
Benchmark
5

Ingredients explained

Water
Est. %60
Function
Origin
WaterThe most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Stearic Acid
Est. %9
Function
Origin
Stearic AcidA saturated fatty acid found in vegetable butter and animal fats. It is an occlusive moisturizing and emollient ingredient and also helps to maintain the barrier function of the skin.
Cetearyl Alcohol
Est. %6
Function
Origin
Cetearyl AlcoholA blend of cetyl alcohol and stearyl alcohol, the fatty alcohols that are derived from palm oil. It helps to create emulsions that give off a soft and silky emollient feel and also increase product thickness.
Ceteareth-20
Est. %4
Function
Origin
Ceteareth-20A fatty alcohol emulsifier that helps to mix oil and water together, best for oil-in-water emulsions. It is also a cleansing agent. When combined with cetearyl alcohol, ceteareth-20 forms a mix that, according to acne.org, can be comedogenic.
Glycerin
Est. %3
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Isopropyl Myristate
Est. %2.5
Function
Origin
Isopropyl MyristateA fast-spreading, cost-effective, non-greasy emollient that is typically used for lubrication, spreadability, or to remove “tackiness” from a product. Isopropyl Myristate is listed as a common comedogenic ingredient by acne.org.
Isocetyl Stearoyl Stearate
Est. %2
Function
Origin
Isocetyl Stearoyl Stearate
Dimethicone
Est. %1.5
Function
Origin
DimethiconeThe most common silicone in skincare. It forms a silky, smooth film on the skin’s surface and can help to prevent water loss. It also aids in wound healing and can treat and soften scars. Dimethicone is considered to be very safe for use.
Cyclopentasiloxane
Est. %1.3
Function
Origin
CyclopentasiloxaneA lightweight, fast-spreading emollient that leaves a very soft and silky after-feel on the skin. Supplied as a clear and colorless liquid, cyclopentasiloxane is often used as a solvent to dissolve other silicones in.
C12-15 Alkyl Benzoate
Est. %1
Function
Origin
C12-15 Alkyl BenzoateA synthetic emollient ester. It works to improve the appearance of the skin by filling in the microcracks on the surface, thereby making the skin appear softer and smoother. It imparts a lightweight, velvety feel.
Caprylic/Capric Triglyceride
Est. %0.3
Function
Origin
Caprylic/Capric TriglycerideA natural occlusive moisturizing and emollient ingredient, it is a blend of glycerin and two fatty acids, caprylic and capric acid. It creates an oil-based protective layer on the skin, thereby preventing water loss.
Orbignya Oleifera Seed Oil
Est. %0.3
Function
Origin
Orbignya Oleifera Seed OilA fatty oil, with emollient and occlusive properties, expressed from the seeds of the Babassu palm. It is similar to coconut oil in a way.
Cannabis Sativa Seed Oil
Est. %0.3
Function
Origin
Cannabis Sativa Seed OilAlso known as hemp seed oil, an occlusive moisturizing and emollient oil derived from the seeds of industrial hemp. It has nothing to do with full-spectrum CBD or THC. It contains unsaturated fatty acids, antioxidant phytosterols, phytol, and vitamin E.
Squalane
Est. %0.3
Function
Origin
SqualaneAn occlusive moisturizing and emollient compound that forms part of the skin’s sebum. The main source of squalane had always been shark liver. Now, however, it is manufactured synthetically or derived from plant oils, such as olive and peanut oil.
Cholesterol
Est. %0.3
Function
Origin
CholesterolAn emollient and important barrier repairing lipid, effective when combined with fatty acids and ceramides. Around 25% of the skin’s lipid layer is made up of cholesterol and it is found in the membrane of every single cell in our body.
Urea
Est. %0.3
Function
Origin
UreaUrea can be found in urine, skin, and other tissues as a degradation product of proteins. In concentrations below 5%, urea is humectant moisturizing. At concentrations above 10% it is keratolytic, that helps to break away old, flaking, and cracked skin.
Sodium PCA
Est. %0.3
Function
Origin
Sodium PCAOne of the most important parts of the skin's Natural Moisturizing Factor, a mixture of various compounds that keeps the skin’s surface well hydrated. Sodium PCA is used in skincare for its fantastic humectant properties.
Macadamia Ternifolia Seed Oil
Est. %0.3
Function
Origin
Macadamia Ternifolia Seed OilAn occlusive moisturizing and emollient oil extracted from macadamia nuts. It is clear and pale yellow with a pleasant nutty aroma and contains oleic and palmitoleic fatty acids, tocopherols, phytosterols, squalene, and polyphenols.
Simmondsia Chinensis (Jojoba) Seed Oil
Est. %0.3
Function
Origin
Simmondsia Chinensis (Jojoba) Seed OilA liquid plant wax, also known as Jojoba oil, pressed from the seeds of Simmondsia chinensis. These seeds can contain up to 50% of liquid wax. It is used as an occlusive moisturizer, emollient, and emulsifier.
Silk Powder
Est. %0.3
Function
Origin
Silk Powder
Tribehenin
Est. %0.3
Function
Origin
TribeheninA soft, pliable wax that serves as an occlusive moisturizer and emollient. It improves the spreadability of skincare products, including the increased payoff of stick products, and imparts a pleasant, smooth feel upon application.
Triethanolamine
Est. %0.3
Function
Origin
TriethanolamineA clear, colorless, and highly viscous liquid, this ingredient is an excellent pH adjuster. When it is necessary to neutralize an acidic solution or to generally increase the pH of a product, triethanolamine is a common choice.
Xanthan Gum
Est. %0.3
Function
Origin
Xanthan GumA natural multi-functional ingredient that originates from fermented sugars. Xanthan gum acts as a viscosity-building agent to thicken skincare products. It is also an excellent stabilizer and works well to hold other ingredients together.
Butylene Glycol
Est. %0.3
Function
Origin
Butylene Glycol

A clear, colorless liquid humectant that draws moisture to the skin. The humectancy of butylene glycol, owed to its two hydroxyl groups, is quite considerable, although not as powerful as glycerin, which contains three hydroxyl groups.

Tocopheryl Acetate
Est. %0.3
Function
Origin
Tocopheryl Acetate

An antioxidant derivative of tocopherol (vitamin E). It helps to protect cells from free radicals and UV damage through the conversion to active vitamin E in the skin. It is more stable than tocopherol.

Allantoin
Est. %0.3
Function
Origin
AllantoinA fluffy, white powder that acts as a humectant due to its water-loving chemistry and as an exfoliant that helps to remove dead skin cells. It has also been shown to be very soothing to irritated and inflamed skin.
Trehalose
Est. %0.3
Function
Origin
TrehaloseA sweet-tasting saccharide that can be found in various yeasts and fungi and that is manufactured from starch for cosmetic purposes. It is one of the most popular sugars in skincare and is mainly used for its humectant properties.
Citrus Grandis Peel Oil
Est. %0.3
Function
Origin
Citrus Grandis Peel Oil

A fragrant essential oil obtained from pomelo peels - sometimes mislabeled as grapefruit. The high limonene content is responsible for its citrusy scent. It may induce sun allergies in people sensitive to citrus fruits.

Ascorbyl Palmitate
Est. %0.3
Function
Origin
Ascorbyl PalmitateA form of vitamin C derived from ascorbic acid and palmitic acid. It is more stable and less irritating than ascorbic acid. Unfortunately, Ascorbyl Palmitate lacks the studies to prove its anti-wrinkle efficacy.
Ceramide NS
Est. %0.3
Function
Origin
Ceramide NSA wax-like lipid natural to the skin’s lipid matrix. It is less frequently used but, in combination with other ceramides, can help to restore balance in the skin’s lipid barrier.
PEG-10 Rapeseed Sterol
Est. %0.3
Function
Origin
PEG-10 Rapeseed SterolPEG-10 Rapeseed Sterol is a mixture of polyethylene glycol (a water-soluble bulking and lubricating synthetic compound) and fat-soluble phytosterols from rapeseed oil. This mixture is used in skincare products to assist with the solubility and the of oil and water (emulsification).
Triacetin
Est. %0.3
Function
Origin
Triacetin
Copper PCA
Est. %0.3
Function
Origin
Copper PCA

A blue-green synthetic salt of copper and pyrrolidone carboxylic acid. It has antimicrobial properties and may be able to help with wound healing and sebum control, although the studies are lacking.

Polyquaternium-51
Est. %0.3
Function
Origin
Polyquaternium-51A biocompatible phospholipid copolymer that is designed to mimic the lipid-based cell membrane found in human skin. Its main function is as a humectant moisturizer.
Sodium Hyaluronate
Est. %0.3
Function
Origin
Sodium Hyaluronate

A sodium salt of famous hyaluronic acid. A potent humectant that hydrates the skin, supports collagen function, and fills out small wrinkles. Sodium hyaluronate also offers soothing and antioxidant properties.

Palmitoyl Oligopeptide
Est. %0.3
Function
Origin
Palmitoyl Oligopeptide

This is an old INCI name that can refer to several other peptides. They are all short fragments of collagen or elastin and function as signal molecules, telling the skin to repair and restructure the dermis, resulting in anti-wrinkle activity.

Disodium EDTA
Est. %0.3
Function
Origin
Disodium EDTAA synthetic chelator that helps to maintain the look and smell of a product by 'locking up' troublesome metal ions.
Citric Acid
Est. %0.3
Function
Origin
Citric AcidA gently exfoliating AHA that helps to remove the top layer of dead skin cells. In comparison to other AHAs, citric acid has been shown to be one of the least effective. It is also very commonly used as a stabilizing and pH-controlling agent.
Sodium Benzoate
Est. %0.3
Function
Origin
Sodium BenzoateA preservative that usually works in combination with other preservatives. It has to be at low pH (<5.5) to be effective.
Potassium Sorbate
Est. %0.3
Function
Origin
Potassium SorbateA preservative widely used in food and personal care products, available from natural sources or synthetically produced. Potassium sorbate works by inhibiting the growth of yeasts, molds, and some bacteria.
Chlorphenesin
Est. %0.3
Function
Origin
ChlorphenesinA preservative and broad-spectrum antimicrobial agent that protects products from a wide range of bacteria and fungi.
Fragrance
Est. %0.3
Function
Origin
FragranceUnder trade secret law, manufacturers have the right not to disclose what exactly went into the fragrance and use the unspecific word Fragrance or Parfum instead. Many fragrances are highly allergenic.
Hexyl Cinnamal
Est. %0.3
Function
Origin
Hexyl Cinnamal

A synthetic scent ingredient that produces a jasmine-like fragrance. According to the International Fragrance Association (IFRA), hexyl cinnamal is a skin sensitizer and allergen and so its use in skincare should be limited.

Butylphenyl Methylpropional
Est. %0.1
Function
Origin
Butylphenyl Methylpropional

A synthetic fragrance ingredient used to recreate the scent of lilies, this ingredient also features fresh, green, and powdery notes. Butylphenyl Methylpropional was recently labeled as Toxic to Reproduction in the EU and will be banned in 2022.

Limonene
Est. %0.3
Function
Origin
Limonene

One of the most used fragrances in skincare products. It is produced from the peels of citrus fruits and has a fresh, pleasant, citrusy smell. People who are sensitive to citrus should try to avoid it, or at least do a patch test before using it.